JPH0681979U - Cartridge type sealant extrusion container - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a cartridge type sealant extruding container having a top structure composed of a paper cylinder, a canopy made of paperboard, and a synthetic resin outflow pipe fitted in a central opening of the canopy. [Structure] A synthetic resin outflow pipe 3 having a flange 32 at a lower end of a projecting tubular portion 31 is fitted and adhered to a central opening 20 of a disk-shaped paperboard canopy 2 having a rising peripheral wall 25 at its peripheral edge, and the canopy is formed. 2 is fitted in the opening of the paper cylinder 1 and its rising peripheral wall 25 is covered by the inner curl portion 5 of the opening edge of the paper cylinder 1 to form a top structure in which it is pressure-bonded and fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cartridge-type sealant extruding container in which a viscous sealant is accommodated and sealed, and the seal of the outflow pipe portion is opened at the time of use so that the sealant can be squeezed out by an extruding gun, and particularly to a paper cylinder and a cylinder. It is an object of the present invention to provide a cartridge-type sealant extruding container having a top structure composed of a paperboard canopy fitted in the upper end opening and a synthetic resin outflow pipe fitted in the center of the canopy.

[0002]

[Prior art]

 A cartridge type sealant extruding container is fitted and fixed to the paper cylinder and its one end opening.A canopy made of a metal plate having a synthetic resin outflow pipe or a synthetic resin canopy integrally having an outflow pipe and the other end opening. The one constituted by the inserted plunger is conventionally known as shown in, for example, Japanese Utility Model Laid-Open No. 60-13337 and Japanese Patent Publication No. 60585/1990.

[0003]

[Problems to be solved by the device]

 The cartridge type sealant extrusion container cannot be reused after extrusion of the contained sealant, and is normally incinerated, crushed, or otherwise disposed of. It is common practice to use a paper cylinder that is easy to dispose of in conventional sealant extrusion containers, but the top structure of the cylinder is a metal plate canopy, or a synthetic resin outflow pipe is attached to it. Since it uses a canopy or a synthetic resin canopy with an outflow pipe integrated, it has a difficulty in disposal. Therefore, it is an object of the present invention to solve the conventional problems without using a metal plate as the top structure of a container such as the above in which a paper cylinder is used as the container body and by minimizing the amount of synthetic resin used. Is.

[0004]

[Means for Solving the Problems]

 The present invention uses a board made of paperboard as a canopy fitted to the upper opening end of the paper cylinder body, and a connecting structure of the canopy and the paper cylinder body end, and a synthetic resin outflow pipe fitted to the central opening. The present invention provides a cartridge type sealant extruding container which solves the above-mentioned problems by making the joint structure of (1) stable and strong. The synthetic resin used for both surfaces of the paperboard canopy and the inner surface of the paper cylinder and the synthetic resin for the outflow pipe in the present invention are all known thermoplastic synthetic resins such as polyethylene and polypropylene, Hereinafter, these are simply referred to as synthetic resins for description.

The gist of the present invention is that a synthetic resin layer is formed on the upper surface, an aluminum foil is laminated on the lower surface, and a synthetic resin layer is laminated in that order. An outflow pipe made of synthetic resin having a flange at the lower end of the protruding cylinder part and a paperboard canopy fitted with the outflow pipe are fitted into the upper opening of the paper cylinder, and the rising peripheral wall is fitted to the upper opening edge. The cartridge type sealant extruding container is characterized in that it has a top structure composed of an aluminum foil and a paper tube cylinder provided with a lining in which synthetic resin layers are sequentially laminated on the inner surface covered and fixed by the curl portion of In the above summary, the lower surface of the canopy is heat-fused to the upper surface of the flange of the outflow pipe, and both surfaces of the rising peripheral wall of the canopy and the inner surface of the inner curl portion of the paper cylinder that encloses it are heat-melted and fixed. The outlet of the outlet pipe, It includes an inner seal stretch-bonded to the flange and the lower surface of the canopy.

In the above, the paper tube cylinder is a paper tube in which a plurality of paper layers are wound and adhered and laminated, and a lining in which an aluminum foil and a synthetic resin layer are sequentially laminated is provided on the inner surface of the paper cylinder. It is formed by film lamination or coating. The material used for the canopy is a laminated board with a synthetic resin layer on the surface of the paperboard, an aluminum foil on the back side, and a synthetic resin layer on the back side. A central opening is formed in the center, and an annular face plate is provided between the central opening and the rising peripheral wall.

The outflow pipe made of synthetic resin fitted in the central opening of the canopy is formed by integrally molding a protruding cylinder part and a flange protruding in the outer peripheral direction of the lower end thereof, and the protruding cylinder part itself. Is used as an outflow nozzle, or a separate outflow nozzle can be screwed with the outer peripheral surface as a male screw part. In either case, the outer shape of the base part should be almost the same as the canopy central opening diameter. Moreover, the flange of the outflow pipe is heat-sealed to the lower surface of the canopy to firmly fit and connect the outflow pipe to the canopy, but it is possible to enhance the heat permeability at the time of fusion and to increase the capacity of the container. In order to secure the thickness, it is desirable that the thickness is as thin as possible within the required strength range, and the shape is a disk shape with a constant thickness or a disk having a taper surface that is gradually thin toward the outer circumference. The outer diameter may be appropriately determined according to the degree of canopy reinforcement.

The top structure of the container of the present invention is composed of a paper cylinder barrel, a canopy made of paperboard, and an outflow pipe made of synthetic resin. Insert the canopy into the upper opening of the cylinder to keep the rising peripheral wall at a certain depth from the edge of the cylinder, so that the peripheral edge of the cylinder touches the inner surface of the rising peripheral wall. The inner curl part is formed by bending and knurling to cover the rising peripheral wall, and during the bending and crimping process or after forming the inner curl part, a well-known heating means such as high frequency or hot air is added to the rising peripheral wall. Fuse both sides of the above to the inner surface of the inner cylinder of the inner curl. After filling the sealant in the container having the above-mentioned top structure and then inserting the plunger in the other end opening, the cartridge type sealant extruding container of the present invention containing the sealant can be obtained.

A laminated sheet having a synthetic resin layer on both sides of an aluminum foil is suitable as an inner seal that is spread and adhered to the lower surface of the flange of the outflow pipe so as to seal the outflow port in the previous period, and is particularly highly sophisticated. When accommodating a sealant that requires liquid blocking properties, the entire lower surface of the canopy including the lower surface of the flange may be spread and adhered, and an integral blind part that seals the outlet of the outflow pipe at the upper end of the protruding cylinder part may be used. If it has or has a cone nozzle extending outward from the protruding cylinder and the tip is sealed, the inner opening of the outflow port is double sealed with an inner seal or no inner seal is provided. Sometimes .

[0010]

[Action]

 The cartridge type sealant extruding container of the present invention has the above-mentioned top structure, the center part of the canopy is reinforced by the flange of the synthetic resin outflow pipe fitted in the center opening of the paperboard canopy, and the rising peripheral wall of the canopy. Since it is covered and fixed by the inner curl of the edge of the cylinder of the paper cylinder, and the bonding strength that can withstand the force in the detaching direction due to the sealant extrusion internal pressure is obtained, the conventional metal plate and synthetic resin canopies are used. Stable and strong top strength that is almost the same as the above.

Many of the sealants enclosed in the extrusion container react with water to cure, and in the case of filling and sealing such a sealant, the container needs to have high airtightness. Must be maintained by changes in external environmental conditions such as storage and transportation before use. That is, in the cartridge type sealant extruding container, the outer peripheral surface of the plunger slidably inserted into the bottom portion of the container body is in close contact with the inner peripheral surface of the container body to maintain airtightness. When the temperature rises due to heat or solar radiation, the encapsulated sealant thermally expands, and with this, the plunger can move to the outside of the container body and avoid an increase in internal pressure, but the sealant will shrink due to temperature decrease. If the pressure inside the container decreases, the diameter of the container body will decrease, and it will be difficult to move the plunger toward the inside of the container body. There was a problem of curing the sealant. The ceiling structure of the sealant extruding container of the present invention uses a paperboard canopy which is more flexible than the conventional metal plate or synthetic resin canopy, so that the volume of the sealed sealant depending on the temperature change. Depending on fluctuations, the canopy surface flexes and deforms inward or outward of the container to remarkably reduce internal pressure fluctuations. Inflow can be avoided.

[0012]

Embodiments Embodiments shown in the drawings will be described below. FIG. 1 is a side view of a cartridge-type sealant extrusion container with a part cut away to show the main part as a cross section, FIG. 2 is an enlarged cross-sectional view of its shoulder, FIG. FIG. 5 is a perspective view of the synthetic resin outflow pipe, and FIG. 5 is a side view showing a cutaway section of a part of the paper cylinder. In FIG. 1, the paper cylinder 1 has a lining 9 on its inner surface, which is composed of an aluminum foil 91 and a synthetic resin layer 92 formed by laminating or coating. The canopy 2 is formed by press-punching a base plate in which a synthetic resin layer 21 is laminated on the upper surface of a paperboard 22 and an aluminum foil 23 and a synthetic resin layer 24 are laminated on the lower surface in order, as shown in FIG. It is a disk-shaped object having an outer shape that matches the inner diameter of the paper cylinder 1 having a rising peripheral wall 25 formed on the periphery. As shown in FIG. 4, the outflow pipe 3 is a synthetic resin molded product integrally formed with a taper disk-shaped flange 32 that is gradually thinned toward the outer periphery at the lower end of the protruding cylindrical portion 31, and has an outlet at the center. 33 is provided in a penetrating manner, and has a male screw portion 34 for screwing the cone nozzle 7 to the outer peripheral surface of the protruding cylinder portion 31.

The outer diameter of the male screw portion 34 on the outer circumference of the protruding tube portion 31 of the outflow pipe 3 is made to match the diameter of the central opening 20 of the canopy 2, and after the outflow pipe 3 is fitted into the canopy 2, the outflow pipe 3 The upper surface of the flange 32 is heat-fused to the lower surface of the canopy 2 to form a stable joined state, and at the same time, the canopy 2 is reinforced. The outflow port 33 of the outflow pipe 3 is sealed by an inner seal having synthetic resin layers 41 and 43 on both sides of an aluminum foil 42 stretched from the lower surface of the flange 32 to the lower surface of the canopy 2.

The canopy 2 to which the outflow pipe 3 is fitted and fixed is fitted into the upper opening of the paper cylinder 1 and its rising peripheral wall 25 is maintained at a position where it has a constant depth from the upper edge of the paper cylinder 1. By bending the upper end edge of the paper cylinder 1 so as to abut the inner surface of the rising peripheral wall 25 and heating and pressure-bonding the inner and outer surfaces of the inner curl portion 5 enclosing the rising peripheral wall 25, both surfaces of the rising peripheral wall 25 are By fusing and fixing the synthetic resin layers 21 and 24 and the synthetic resin layer 92 on the inner surface of the paper cylinder 1, a strong top structure can be obtained. A cartridge type sealant extruding container is obtained by the paper cylinder 1 provided with the top structure and the plunger 6 slidably fitted in the other end opening.

FIG. 5 is a partially cutaway cross-sectional view showing an example of a laminated structure of the barrel wall of the paper barrel 1 suitable for the container. Conventionally, it is known to use a paper cylinder formed by rolling a single sheet of paperboard into a cylindrical shape and overlapping and adhering both edges of the paperboard as a container body. However, such a paper cylinder body has insufficient strength. When curling the opening edge to fix the lid plate to the opening end, buckling deformation occurs due to the processing pressure, and deformation and damage easily occur due to the pressure from the inside of the container. Since the inner surface of the paper cylinder has a step of overlapping the paper edges, it is difficult to obtain the sealability with the plunger as the body portion of the sealant extruding container, and thus it cannot be used for the sealant extruding container. As shown in FIG. 2, the paper cylinder 1 used in the present invention has a laminated structure composed of a synthetic resin layer 92 serving as an innermost layer, a lining 9 composed of an aluminum foil 91, and a paper layer 8. 4 is formed by winding each tape in a spiral shape and adhering in a cylindrical shape, and the paper layer 8 includes a first paper layer 81, a second paper layer 82, and a third paper layer 83, The tape edges of the first and second paper layers respectively form abutting points 85 and 86, and the third paper layer is also an abutting point. It is spirally wound and laminated and adhered to each other so as to form the overlapping seam 87, and there is no step on the inner surface of the paper cylinder body 1, and the outermost layer having the overlapping seam is reinforced to curl the opening edge. Sealer with high pressure resistance without buckling deformation due to It can be a paper tube cylinder bets extruding container. A decorative layer is provided on the outer surface of the paper cylinder 1 as needed.

6 to 8 are cross-sectional views showing modified examples of the outflow pipe 3, all of which have the same fitting and coupling structure with the canopy 2 as in the case of the embodiment, but the shape of the projecting tubular portion 31 thereof. It is different. In FIG. 6, the outflow port 33 of the protruding tube portion 31 of the outflow pipe 3 is sealed by a blind portion 36 integrated with the upper end of the protruding tube portion 31, and the blind portion 36 is cut by XX ray at the time of use. The cutting nozzle is opened, and an appropriate nozzle is screwed to the male screw part 34 for use. FIG. 7 shows a cone nozzle 71 integrally formed to extend outward from the upper end of the protruding cylinder part 31. Sometimes it is used by cutting and cutting at an arbitrary position of the cone nozzle 71, or cutting at the base of the cone nozzle 71 or at an arbitrary position and screwing another nozzle to the male screw portion 34. A cone nozzle 71 is provided on the upper side without providing a male screw portion on the outer peripheral surface of the cylindrical portion 31.

[0017]

[Effect of device]

 As described above, according to the present invention, the fitting connection of the synthetic resin outflow pipe to the paperboard canopy and the fitting connection of the paper cylinder barrel opening to the canopy become stable and strong, and the paperboard canopy becomes the outflow pipe. It is possible to obtain a cartridge type sealant extruding container having an internal pressure resistant top structure reinforced by adhesion of the flange of the above, and the container is a container using a conventional metal plate canopy or a synthetic resin canopy. Compared with this, the effects such as easier disposal can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a partially cutaway longitudinal section of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of the shoulder portion.

FIG. 3 is a perspective view of a paperboard canopy.

FIG. 4 is a perspective view of an outflow pipe made of synthetic resin.

FIG. 5 is a sectional view in which a part of a paper cylinder is cut away.

FIG. 6 is a cross-sectional view of a container top having a canopy equipped with a deformed outflow pipe.

FIG. 7 is a cross-sectional view of another modification of the outflow pipe.

FIG. 8 is a sectional view of still another modified example of the outflow pipe.

[Explanation of symbols]

 1 Paper cylinder body 2 Canopy 3 Outflow pipe 4 Inner seal 5 Inner curl part 6 Plunger 8 Paper layer 9 Lining 20 Central opening 21 Synthetic resin layer 22 Paperboard 23 Aluminum foil 24 Synthetic resin layer 25 Standing peripheral wall 31 Protruding cylinder part 32 Flange 33 Outflow port 34 Male screw portion 41 Synthetic resin layer 42 Aluminum foil 43 Synthetic resin layer 91 Aluminum foil 92 Synthetic resin layer

Claims (3)

[Scope of utility model registration request] 1. A central opening (20) and a rising peripheral wall (25) made of paperboard (23) having a synthetic resin layer (21) on the upper surface, an aluminum foil (23), and a synthetic resin layer (24) sequentially laminated on the lower surface. The formed canopy (2) and the central opening (2) of the harmful canopy (2)
0), the outflow pipe (3) made of synthetic resin having a flange (32) at the lower end of the protruding cylinder part (31), and the canopy (2) made of paperboard in which the outflow pipe (3) is fitted. ) Is fitted in the upper opening of the paper cylinder, and the rising peripheral wall (25) is covered and fixed by the inner curl portion (5) at the edge of the upper opening. The aluminum foil (91) and the synthetic resin layer (92) are sequentially attached to the inner surface. A top seal structure composed of a paper cylinder body (1) provided with a lining (9) in which the above (1) is laminated. 2. The synthetic resin layer (24) on the lower surface of the canopy (2) is heat-sealed to the upper surface of the flange (24) of the outflow pipe (3), and the synthetic resin on both surfaces of the rising peripheral wall (25) of the canopy (2). Layer (2
The cartridge type sealant extrusion according to claim 1, wherein (1) and (24) and the synthetic resin layer (92) on the inner surface of the curl portion (5) of the paper cylinder body (1) that covers the same are fixed by heat fusion. container. 3. A synthetic resin layer (42) on both sides of an aluminum foil (42) stretch-bonded with the outlet (33) of the outflow pipe (3) on the lower surface of the canopy (2) including the entire lower surface of the flange (32). Four
The cartridge type sealant extrusion container according to claim 1 or 2, which is sealed by an inner seal (4) in which (1) and (43) are laminated.